SSIC Silicon carbide crucible

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Special ceramics: Special ceramics

Product Description:

SSIC   Silicon  carbide  crucible

SSIC   Silicon  carbide  crucible

Tailor-made for customers all kinds of pumps with my company, kettle, bearing no pressure sintering silicon carbide mechanical seal, and all kinds of resistance corrosion pump parts and the accessories. Our company pressureless sintered silicon carbide products a reaction bonded silicon carbide products, can easily adapt to the harsh working conditions, in strong corrosive, strong wear, high temperature, high pressure, high strength harsh harsh under complex conditions is more outstanding. At the same time, our company to provide customers with nozzles, armored body armor plate and other special-shaped pieces of custom-made service.

Compared with the reaction sintered silicon carbide product (SSIC), the production process of the sintered silicon carbide product (RBSIC) is complex and the production investment is high. In addition, whether it is in the resistance to corrosion and abrasion, compressive and flexural fracture resistance of or high pressure, high temperature and other properties are more excellent, this is pressureless sintering silicon carbide products will in the near future completely replace reaction bonded silicon carbide products is one of the important reasons. The main varieties of the pressureless sintering silicon carbide products with all kinds of mechanical seal with sealing ring and moving ring and static ring, corrosion resistant pump, magnetic pump, shield pump components. At the same time, the production special-shaped pieces of nozzle, wire drawing die, armor plate. According to the drawings, we will provide customers with satisfactory products and customer satisfaction. Let customer satisfaction is one of the purposes of our company has been pursued, but also one of the objectives pursued by all the staff of our company.

Features: high temperature resistance, wear resistance, corrosion resistance, oxidation resistance, hardness, heat conduction

Main products: mechanical seals, pump parts, nozzles, bullet proof plate

Mechanical seals: high hardness, high wear resistance, good self - Lubrication and high heat conductivity, so the service life of mechanical seal is greatly improved.

Pump: resistance to corrosion and wear characteristic of the pressureless sintering silicon carbide become magnetic pump sliding bearing, resistant corrosion pump sleeve, shielding pump assembly, etc. various kinds of pump of choice

Nozzle: wear resistant, high temperature resistance, high hardness characteristics of the normal pressure sintering silicon carbide nozzle to become a perfect alternative to carbide nozzle

Armor: light weight, high hardness, good ballistic performance, pressureless sintering of SiC for your life and property security escort

Here are some of the pressure sintered silicon carbide products, physical and chemical parameters:

 

medium

content

Causticity

Atmospheric SIC

The reaction SIC

WC

WC

AL2O3

ZrO2

Si3N4

stainless steel

steel

HNO3 nitric acid

50%

A

A

C

A

A

C

C

C

Hydrochloric acid HCI

35%

A

A

C

A

A

C

C

A

Sulfuric acid H2SO4

98%

A

A

C

A

A

C

C

A

Hydrofluoric acid HFF

40%

A

C

C

C

C

C

C

C

Phosphoric acid H5PO4 215OC

85%

C

C

C

C

C

C

C

C

HNO3+HF

20%+5%

A

C

C

C

C

C

C

C

Sodium chlorate NaCIO

10%

A

B

C

A

A

A

C

A

Sodium hydroxide NaOHH

50%

A

C

A

B

A

B

A

A

Potassium hydroxide KOH


A

C

A

B

A

B

A

A

Acetic acid CH3COOHH

80%

A

A

C

A

A

C

C

C

Sodium sulfate + Na2CO3 + H2SO4 925OC

 


A

A

C

A

A

C

C

B

Silica solution SIO2

 


B

C

C

C

C

C



Assessment Method: the specimen prior polishing, immersed in the test liquid (70OC) for 100 hours, the weight was measured and observed microstructure, weight reduction is calculated by the degree of corrosion was observed microstructure for corrosion to comprehensive judgments.

A level (corrosion): corrosion rate ≤0.125mm / ingredients in a small amount of corrosion observed slice

Level B (somewhat resistant): corrosion rate = 0.125-1.0mm / or annual corrosion rate ≤0.125mm / observe a large number of corrosion

Class C (resistant to corrosion): corrosion rate ≥1.0mm / or the main ingredient of Corrosion

 Silicon carbide performance indicators

Index Name

 

Atmospheric SiC

Reaction Bonded Silicon Carbide

Purity (%) of silicon carbide

> 97

>90

Density (g / cm)

3.06-3.15

>3.05

Particle size (um)

0.5-0.7

8-20

Hardness (HRA)

≥90

≥90

Flexural Strength (MPa)

400-580

350-450

Compressive strength (MPa)

3900

>2500

Fracture Strength (MPa)

3.05-4.6

4.3

Elastic Modulus (GPa)

380-410

420

Thermal conductivity

102.6

35-110

Coefficient of thermal expansion (1 / ℃)

4.02×10

4.3×10

Poisson's ratio

0.14

0.15

 


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Q:Who invented ceramics?
The invention of pottery is an important process of human civilization - the first human use of natural objects, according to their will to create a new thing. Discovered from the Nihewan Yangyuan County in Hebei province in the late Paleolithic pottery, in China pottery dating back more than 11700 years of history. Pottery is made of clay (clay), dried and burned with fire. It is the crystallization of mud and fire. Our ancestors of clay is long-standing, early in life in primitive society, our ancestors everywhere cannot do without clay, they found to be soaked in water after the sticky clay and plasticity, dried and hardened. The history of the use and understanding of fire is also very long, about 2 million 50 thousand years to 700 thousand years ago in the Yuanmou era, began to use fire. In their long primitive life, the ancestors found that the dried mud became stronger, harder and waterproof, so pottery came into being. The invention of pottery, which opened the human nature, the transformation of nature, and the struggle against nature of the new page, has a major historical significance, is a milestone in the history of human production.
Q:What kinds of ceramics do you have?
Soft and hard porcelain porcelain is different body containing flux more, firing temperature is slightly lower, at 1300 DEG C, so its chemical stability, mechanical strength, dielectric strength is low, the general industrial porcelain without soft porcelain, which is characterized by high translucency, more art porcelain, health porcelain, ceramic tiles and decorative porcelain, Bone China, porcelain frits usually belong to this category.Many kinds of special porcelain, a variety of oxide as the main body, such as high alumina porcelain, it is mainly to alumina, magnesia porcelain, Magnesium Oxide dominated; talc porcelain, porcelain with talc; beryllium or beryllium oxide, with beryl; zirconia ceramic, zirconia based on titanium porcelain with titanium oxide; the main.The characteristics of the special porcelain is, by products not containing clay or contain very small amounts of clay, molding by dry pressing, high pressure method, in the defense industry, heavy industry in the use of such porcelain, such as rocket, baffle missile, aircraft, cars with spark plug in a semiconductor with radio. The fast cutting with porcelain knife etc..This answer is recommended by the questioner
Q:How to judge whether the ceramic cup is poisonous or not?
According to the standard indicators of the state of ceramic production to the production, as long as the ceramic products, especially like ceramic cups and the like necessities index is more strict, the reason why there will be some cheaper ceramic glass or ceramic supplies is because these glass indicators and safety are not very high. The main advantage of these products is relatively low prices, so most consumers in the purchase process will generally choose such ceramic products, especially on the market comparison color cup attract our attention, so consumers in its magical effect under very easy to buy!
Q:Brief introduction of honeycomb ceramics
Honeycomb ceramics can be made from a variety of materials. The main materials are: cordierite, mullite, aluminum titanate, activated carbon, silicon carbide, activated alumina, zirconium oxide, silicon nitride and cordierite, mullite, cordierite, aluminum titanate and other composite matrix. Activated carbon powder or granules made of ceramic honeycomb shape, greatly improve the treatment of water purification and wastewater treatment ability, especially in the pharmaceutical industry, antibiotics, vitamins, hormones and nucleic acid injection of various drugs such as injection, dehydration and decolorization to impurities etc.. Honeycomb ceramic can be divided into four categories: regenerator, filler, catalyst carrier and filter material. Ceramic honeycomb regenerative body heat capacity above 1000kJ/kg products, the highest use temperature more than 1700 DEG C, in heating furnace, heating device, soaking furnace, cracking furnace kiln fuel can be saved more than 40%, the yield increased by more than 15%, the temperature of exhaust gas is lower than 150 DEG C. Honeycomb ceramic filler filler than other shapes of greater surface area, better strength and other advantages, can make the vapor-liquid distribution more uniform, the bed resistance is reduced, the effect is better, and can prolong the service life, in the petrochemical, pharmaceutical and fine chemical industry as a filler effect is quite good.
Q:What are the characteristics of dry pressed ceramic tiles?
The new standards, surface area greater than 6400 square centimeters, the thickness of not more than 13.5 mm; surface area less than 3600 square centimeters of the thickness of ceramic tiles thickness less than 10 mm; surface area between 3600 to 6400 cm, thickness less than 11 mm.The new standard also raised the technical requirements of extruded ceramic tiles, and further eliminate backward production capacity. The low water absorption extruded ceramic tiles are divided into two types with a water absorption rate of less than 0.5% and between 0.5% and 3%. The extruded ceramic tile with a water absorption ratio between 3% and 10% is eliminated.
Q:Ceramic full glaze hanging process
A kind of glazed process in order to meet the special needs. It is a glaze process designed to prevent the bottom of the finished product from being glued to the kiln during the glazing process.
Q:What does "ceramics" mean?
Tao: with soil and water and (for Huo) made of mud, to shape artifacts in the fire, firing at low temperature. A low of 700-800 degrees; a high 1200 degrees. There may be kiln or kiln without burning. The water permeability of the utensil is high. Hard pottery and clay. The origin of pottery is worldwide, and it is a product of human development.Porcelain: Kaolin and (Huo) mud, the earlier process with pottery. To glaze after forming (mostly quartz), dried into the kiln temperature 1700-2100 degree burn. The principle is the crystallization of the clay made by the kaolin, and the glaze of the quartz component is also crystallized. The water penetration rate of the utensil is very low. Is China's first invention, spread to the world.
Q:Comparing the similarities and differences between structural ceramics and functional ceramics
Special ceramic material using ceramic on sound and light, electric, magnetic and thermal properties have made known as functional ceramics. Many kinds of functional ceramics, use different. For example, according to the difference of electrical properties of the ceramics made of conductive ceramics, semiconductor ceramics, dielectric ceramics, ceramic insulation and other electronic materials.
Q:What are the new ceramic products?
fine ceramicsThis new type of precision ceramic building materials) a Japanese company developed is a mainly composed of water soluble latex powder, such as 100 grams and 20 grams of cement cell ceramic in the effect of hydrolysis of a mixture of calcium, will completely eliminate the effect of hydration occurred in the degrees of freedom, can make life extension 4 to cement 5 times tolerance degrees Celsius when using non water model (plastic mold, can be obtained with the same ceramic luster.
Q:Which do you prefer, kitchen knife, stainless steel or ceramic?
A group of 2 goods, do not know do not talk nonsense, and others together with you. Stainless steel is the most garbage knife, the knife is usually made of carbon steel, stainless steel, high carbon steel, and ceramic. Carbon steel is a mixed material. Unobstructed, used as a master chef knife, because it can be very difficult to grind very sharp. But acid foods tend to fade. I don't want to be the most versatile material in the kitchen. He will not be corroded and discolored, more durable than carbon steel, but not sharp. High carbon steel is a mixture of carbon and stainless steel scrap. He is not very popular because of corrosion and discoloration, is also very easy to sharpen. Finally, the best thing is ceramic material, not molded garbage, not forged. It is calcined by molding zirconium oxide powder, which is second to diamond in hardness. The knives of this material are extremely sharp, resistant to corrosion, easy to maintain and clean, and acid resistant

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